TY - JOUR
T1 - Understanding the basis of shortnose sturgeon (Acipenser brevirostrum) partial migration in the Gulf of Maine
AU - Altenritter, Matthew E.
AU - Zydlewski, Gayle B.
AU - Kinnison, Michael T.
AU - Zydlewski, Joseph D.
AU - Wippelhauser, Gail S.
N1 - Funding Information:
Funding for this work was provided by NOAA Fisheries award No. NA10NMF4720023 to the Maine Department of Marine Resources and the USGS Maine Cooperative Fish and Wildlife Research Unit. Additionally, this project was supported by the USDA National Institute of Food and Agriculture, Hatch project No. ME031716, through the Maine Agricultural and Forest Experiment Station (Publication No. 3531). All methods were carried out under ESA Section 10 Permits (Nos. 1578, 1595, and 16306). The telemetry array in the Penobscot River was cooperatively maintained by the University of Maine, NOAA Fisheries Maine field station, and the USGS Maine Cooperative Fish and Wildlife Research Unit. The telemetry array in the Kennebec River was maintained by the Maine Department of Marine Resources. We thank the staff from the Maine Department of Marine Resources and NOAA Fisheries Maine field station as well as numerous volunteers that assisted with the project over multiple years. The use of trade names does not constitute endorsement by the U.S. Government. This study was conducted under the auspices of the University of Maine IACUC protocol No. A2011-06-11. Author roles: G.B.Z., M.T.K., and M.E.A. developed the project scope and funding, M.T.K. and M.E.A. developed the conceptual framework within the theme of partial migration, G.B.Z. and M.E.A. developed and led the demographic analyses, and J.D.Z. and G.S.W. assisted in movement and demographic data acquisition. All authors contributed to the refinement of the project and revisions of the manuscript.
Funding Information:
Funding for this work was provided by NOAA Fisheries award No. NA10NMF4720023 to the Maine Department of Marine Resources and the USGS Maine Cooperative Fish and Wildlife Research Unit. Additionally, this project was supported by the USDA National Institute of Food and Agriculture, Hatch project No. ME031716, through the Maine Agricultural and Forest Experiment Station (Publication No. 3531). All methods were carried out under ESA Section 10 Permits (Nos. 1578, 1595, and 16306). The telemetry array in the Penobscot River was cooperatively maintained by the University of Maine, NOAAFisheries Maine field station, and the USGS Maine Cooperative Fish and Wildlife Research Unit. The telemetry array in the Kennebec River was maintained by the Maine Department of Marine Resources. We thank the staff from the Maine Department of Marine Resources and NOAA Fisheries Maine field station as well as numerous volunteers that assisted with the project over multiple years. The use of trade names does not constitute endorsement by the U.S. Government. This study was conducted under the auspices of the University of Maine IACUC protocol No. A2011-06-11. Author roles: G.B.Z., M.T.K., and M.E.A. developed the project scope and funding, M.T.K. and M.E.A. developed the conceptual framework within the theme of partial migration, G.B.Z. and M.E.A. developed and led the demographic analyses, and J.D.Z. and G.S.W. assisted in movement and demographic data acquisition. All authors contributed to the refinement of the project and revisions of the manuscript.
Publisher Copyright:
© 2018, Canadian Science Publishing. All rights reserved.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018
Y1 - 2018
N2 - Movement of shortnose sturgeon (Acipenser brevirostrum) among major river systems in the Gulf of Maine is common and has implications for the management of this endangered species. Directed movements of 61 telemetered individuals monitored between 2010 and 2013 were associated with the river of tagging and individual characteristics. While a small proportion of fish tagged in the Kennebec River moved to the Penobscot River (5%), a much higher proportion of fish tagged in the Penobscot River moved to the Kennebec River (66%), during probable spawning windows. This suggests that Penobscot River fish derive from a migratory contingent within a larger Kennebec River population. Despite this connectivity, fish captured in the Penobscot River were larger (~100 mm fork length) and had higher condition factors (median Fulton’s K: 0.76) than those captured in the Kennebec River (median Fulton’s K: 0.61). Increased abundance and resource limitation in the Kennebec River may be constraining growth and promoting migration to the Penobscot River by individuals with sufficient initial size and condition. Migrants could experience an adaptive reproductive advantage relative to nonmigratory individuals.
AB - Movement of shortnose sturgeon (Acipenser brevirostrum) among major river systems in the Gulf of Maine is common and has implications for the management of this endangered species. Directed movements of 61 telemetered individuals monitored between 2010 and 2013 were associated with the river of tagging and individual characteristics. While a small proportion of fish tagged in the Kennebec River moved to the Penobscot River (5%), a much higher proportion of fish tagged in the Penobscot River moved to the Kennebec River (66%), during probable spawning windows. This suggests that Penobscot River fish derive from a migratory contingent within a larger Kennebec River population. Despite this connectivity, fish captured in the Penobscot River were larger (~100 mm fork length) and had higher condition factors (median Fulton’s K: 0.76) than those captured in the Kennebec River (median Fulton’s K: 0.61). Increased abundance and resource limitation in the Kennebec River may be constraining growth and promoting migration to the Penobscot River by individuals with sufficient initial size and condition. Migrants could experience an adaptive reproductive advantage relative to nonmigratory individuals.
KW - INHS
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U2 - 10.1139/cjfas-2017-0083
DO - 10.1139/cjfas-2017-0083
M3 - Article
SN - 0706-652X
VL - 75
SP - 464
EP - 473
JO - Canadian Journal of Fisheries and Aquatic Sciences
JF - Canadian Journal of Fisheries and Aquatic Sciences
IS - 3
ER -